From owner-freebsd-questions@FreeBSD.ORG Mon Mar 31 00:32:02 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 02FDF628 for ; Mon, 31 Mar 2014 00:32:02 +0000 (UTC) Received: from nm20.access.bullet.mail.bf1.yahoo.com (nm20.access.bullet.mail.bf1.yahoo.com [216.109.114.44]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A704BE2A for ; Mon, 31 Mar 2014 00:32:01 +0000 (UTC) Received: from [66.196.81.161] by nm20.access.bullet.mail.bf1.yahoo.com with NNFMP; 31 Mar 2014 00:29:51 -0000 Received: from [98.139.221.157] by tm7.access.bullet.mail.bf1.yahoo.com with NNFMP; 31 Mar 2014 00:29:51 -0000 Received: from [127.0.0.1] by smtp117.sbc.mail.bf1.yahoo.com with NNFMP; 31 Mar 2014 00:29:51 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rogers.com; s=s1024; t=1396225791; bh=RbooEMO7iJ5RLW4LSxpiy27M/6ZcxM+Ds/OxP7E0aaM=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Date:From:To:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding; b=31UFUUkJ23k89nIAVJdyGczLcxVDDlRT0ePFN69/Zshr+hGLk5enJiUaBUEFGgjb72X9ytB0EOqMaPkM9irfS5dUjjMGFNtGW7ahDcewJcS9KW07F+duDyJFMSZEopv6l6OkQ6/yFiooKwoQMpJwGkwhdTJ/Z1EAe0hAS2nCAOs= X-Yahoo-Newman-Id: 417917.59898.bm@smtp117.sbc.mail.bf1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: Ci1l.ZgVM1lXyXSxeGVXvu9Ei5O3r3qMkC_MbWnx4mbjuec gsWaQqpm58.1Rtw2SFnS38CW3sAwEy8e402Tan88XCTxl50mumC8i84uF6eU fMJo3npi7uh83goLlSRKVoDrWLrWGm2nafU5Dng5iVIz8O2.9k5Lw8fSOfvF BI6MyuNbtSk9c0IZ6L7i7Lx5Crxsx0HWIaE_dMarK2GFPLLw.S.Vg7s6.HGk q50dcEJjNKtiI.rIMh4P0yTR8EIVfyvh.OmpH3QN4ahsvSUP50nTObGVD2I. E4ePbhIwcntCTbZ93RKvBktHEyzeB1r_7LVSLED7mCCZNatSwhoolP22.ekQ FDJ0gsO9ljUh38aEGZXTZWBabYDJmYE239guSmg3KMvkDU38a6QGPqryRuoU uSIj6p8d6zkDaLGx9xaWqQ0K2oe9Q407i3BgmoGTZYsPVZ2x8VnfXSRtl_1w EV3ZWbT3pJtuY3rwiMXIyKwY_15TeCkxnq_7H3fxoJNgWUyyl7ZtqvuChIgw 9vzOktzkjNkVzg0y6SWSi_bwDMZGrj7gukF9I5SAnUN7hTQiUHpWbi360Ho8 .XMNKQVoPqtjYERAcW4GLhqtvFSpmmtXgevYbLRT8J2C6FtZZIeHhZpE3vZe PhXwCmsOYZNRjjL1X28H7D4aV8NTHOCudisJ8ZO8KzHv7hniwQ9Dzbwj6rLo _nyiAPCmV X-Yahoo-SMTP: N82WFx6swBBjwcHWPFR2CGt6udzA8RPrA.xm0enFFXaK2g-- X-Rocket-Received: from europa (mike.jeays@99.224.170.139 with plain [98.139.221.125]) by smtp117.sbc.mail.bf1.yahoo.com with SMTP; 31 Mar 2014 00:29:51 +0000 UTC Date: Sun, 30 Mar 2014 20:29:40 -0400 From: Mike Jeays To: freebsd-questions@freebsd.org Subject: Re: CPU Overheating? Message-ID: <20140330202940.6d2d532b@europa> In-Reply-To: References: X-Mailer: Claws Mail 3.8.1 (GTK+ 2.24.17; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Mar 2014 00:32:02 -0000 On Mon, 31 Mar 2014 00:11:43 +0000 (UTC) Walter Hurry wrote: > I have a bog-standard Acer laptop with FreeBSD 9.2 (amd64). > > CPU is AMD Athlon(tm) 64 X2 Dual-Core Processor TK-42 (1596.09-MHz K8-class CPU) per dmsg. > > From time to time, it shuts off without warning, as if the power cable has been pulled out. Nothing in any of the logs, and when I power up again it starts normally after replaying the journal. > > The shut-off is invariably when it is doing a compile of a big port. I therefore suspect that the CPU is overheating and that the BIOS is causing the shutdown. > > To investigate the problem, I have done a 'kldload coretemp' and am periodically running: > 'sysctl hw.acpi.thermal.tz0.temperature'. So far (only 6 runs) this is reporting temperatures between 76C and 84C. > > Question 1: Is this the canonical way to monitor CPU temperature? > Question 2: Is this too hot? > Question 3: I plan to load the module in /boot/loader.conf and set up a cron job to run every minute and log the result to a file. Is this sensible, or overkill? > > Thanks. > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" The maximum temperature is given as 95C. You are under, but it seems quite likely to be the problem. Logging it very minute will be well worth trying, and might be quite informative. See: http://www.cpu-world.com/CPUs/K8/AMD-Athlon%2064%20X2%20TK-42%20-%20AMETK42HAX5DM.html